Step 1 - Sizing a furnace or air conditioner
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- Опубликовано: 24 авг 2024
- This how to is just a general overview of the installation of residential furnace and air conditioning system.
All equipment must be installed per the manufacturers specifications by a qualified installer and must adhere to all Federal, State, and Local codes.
He said this is a "general overview". This chart will work for 80% of homes. 15% would be on the fence to choose the next up or down size. 5% would be special situations. So this is great for confirming what you need to size to replace what you already have. Sounds like some contractors that are commenting like to run up the bill.
Bad advise every home has a different load manual j is the way to go and a complete home envelope analysis insulation type , fenestration etc
I always go in one size bigger so you’re not overworking the system . My daughter put the one recommended on that heat the house above 62° in extreme cold.
Exactly wrong overdizing esp bad in hot humid conditions won’t remove enough humidity. Let alone higher initial costs and less efficiency heat pumps are optimally running all the time not stopping two often
@@johnwhite2576 I think the contractor put the wrong size in my house because it never cooled the house . and my neighbors on both sides of me had the same issue and they want to the next size bigger too.
Thanks. Very helpful.
This chart and advice is completely wrong. Have a proper heat load calculation and ductwork evaluation completed before having any equipment installed.
Go with a lennox or trane they are the best.
You cannot size hvac equipment by "charts". It has to be done like previously mentioned in the comments below by using manual J to find the load, manual S to select the equipment and also a manual D to ensure the ductwork is sized correctly as well. By "being around a long time" you guys should know that taking shortcuts is doing a disservice to the customer! HVac is not something that should be taken up by a DIY, especially during the design and sizing phase or you may wind up spending all those dollars that you saved replacing incorrectly sized equipment and/or possibly repairing mold/moisture related issues caused by oversized equipment. Hire a competent contractor that does proper load calculations and get the job done right. In the end you will have a system that saves you money on your electric bill and that also provides excellent comfort for the occupants of the home 365 days a year.
True that..
Very helpful video. Thank you.
Mine is in the attic is that more work to have that installed and more money costing i was wondering its 725 Sq ft home small. dont need a big unit then im thinking maybe 40 size ?
where do I can get one of this charts
Can you email me the second page charts with the efficiency specs Please?
Great Chart tnx
Really liked your video. How can I get one of those charts that you had.
Screenshot and print it
MANUAL J ! that's the only way to size an system period ! not with this guy's rule of thumb chart
Where can I find those chart, sir? Thank you.
Hi
I try to find chart online ,unfortunately I couldn't can you help me or send me the chart pdf fill please 🙏
Pause the video and take a screenshot and reference whenever you like
September?? We have Criminals, justice Delayed is Justice Denied!!!!!!!1
Manual J and S are the only way.....Good video, but IMHO bad advice
You just grossly oversized the furnace brother
That’s not how you size furnaces or air conditioners
I highly recommend this video if you want to learn how to wrongly size your furnace 🤣🤣🤣🤣
Even if you're doing a quick load calc., You're still wrong. The only true way to size a home is a Manual J.STOP BEING LAZY!
do you add in the sq footage of a basement. my main floor is 1275 but w/ basement I have 2305sq ft.
Yes you would add in you're basement sq. If you'll be putting a supply and return in the basement space
@@KhaimDaTrucker What if you don't use the basement that much and you usually close the supply and return in the basement?